Henry de Beaumont, 5th Earl of Warwick (c. 1192 – 10 October 1229), Earl of Warwick, and by marriage Lord of Hocknorton (Hook Norton) and Hedenton (Headington) in Oxfordshire, was the son of Waleran de Beaumont, 4th Earl of Warwick and Margaret de Bohun.
[2] It was during this time that John, King of England had seized his estates in the Gower in South Wales and gave them to William de Braose.
This led to constant disputes between succeeding Earls and the Braose family.
He soon after however chose to fight and joined the court of King John's side and commanded the Royal Army.
He fought for Henry III at the siege of Mountsorrel (1217), Bytham and at the storming of Lincoln.